OEM 2007 Chevrolet Cobalt Lash Adjuster

2007 Chevrolet Cobalt Lash Adjuster Parts and Q&A

• Q: How to replace the exhaust camshaft and lash adjuster on 2007 Chevrolet Cobalt?

  A: You can start the exhaust camshaft and lifter replacement by removing the camshaft cover along with the upper Timing Chain Guide. After installing the sprocket holding tool (J 43655) you must remove both intake and exhaust camshaft sprocket bolts while discarding them. Mark the camshaft caps as they are separated so you can easily return them to their initial positions before moving them forward. Cautiously loosen each bolt on each cap for a single turn before ending the spring tension on the camshaft and ultimately removing all caps together with the exhaust camshaft and roller followers and hydraulic adjusters. Before fitting the parts, apply lubricant to the valve tips and place the hydraulic lash adjusters and camshaft roller followers following the same alignment as the camshaft sprocket. Add the exhaust camshaft together with camshaft caps while employing a three-turn installation order to a final torque of 10 n.m (89 lb in). The installation continues with camshaft sprocket attachment to each camshaft while finishing with new bolts that receive hand tightening only. Implement the sprocket holding tool (J 43655) to eye up the camshaft sprocket bolts until they reach 85 n.m (63 lb ft) with an additional 30-degree angle. To complete installation place the upper Timing Chain Guide then tighten it to 10 n.m (89 lb in) while putting back the camshaft cover.